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- /*
- * Copyright (c) 1982, 1986, 1989, 1990 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)uipc_syscalls.c 7.24 (Berkeley) 6/3/91
- */
-
- #include "param.h"
- #include "filedesc.h"
- #include "proc.h"
- #include "file.h"
- #include "buf.h"
- #include "malloc.h"
- #include "mbuf.h"
- #include "protosw.h"
- #include "socket.h"
- #include "socketvar.h"
- #ifdef KTRACE
- #include "ktrace.h"
- #endif
-
- /*
- * System call interface to the socket abstraction.
- */
-
- extern struct fileops socketops;
-
- socket(p, uap, retval)
- struct proc *p;
- register struct args {
- int domain;
- int type;
- int protocol;
- } *uap;
- int *retval;
- {
- struct filedesc *fdp = p->p_fd;
- struct socket *so;
- struct file *fp;
- int fd, error;
-
- if (error = falloc(p, &fp, &fd))
- return (error);
- fp->f_flag = FREAD|FWRITE;
- fp->f_type = DTYPE_SOCKET;
- fp->f_ops = &socketops;
- if (error = socreate(uap->domain, &so, uap->type, uap->protocol)) {
- fdp->fd_ofiles[fd] = 0;
- ffree(fp);
- } else {
- fp->f_data = (caddr_t)so;
- *retval = fd;
- }
- return (error);
- }
-
- /* ARGSUSED */
- bind(p, uap, retval)
- struct proc *p;
- register struct args {
- int s;
- caddr_t name;
- int namelen;
- } *uap;
- int *retval;
- {
- struct file *fp;
- struct mbuf *nam;
- int error;
-
- if (error = getsock(p->p_fd, uap->s, &fp))
- return (error);
- if (error = sockargs(&nam, uap->name, uap->namelen, MT_SONAME))
- return (error);
- error = sobind((struct socket *)fp->f_data, nam);
- m_freem(nam);
- return (error);
- }
-
- /* ARGSUSED */
- listen(p, uap, retval)
- struct proc *p;
- register struct args {
- int s;
- int backlog;
- } *uap;
- int *retval;
- {
- struct file *fp;
- int error;
-
- if (error = getsock(p->p_fd, uap->s, &fp))
- return (error);
- return (solisten((struct socket *)fp->f_data, uap->backlog));
- }
-
- #ifdef COMPAT_43
- accept(p, uap, retval)
- struct proc *p;
- struct args {
- int s;
- caddr_t name;
- int *anamelen;
- int compat_43;
- } *uap;
- int *retval;
- {
-
- uap->compat_43 = 0;
- return (accept1(p, uap, retval));
- }
-
- oaccept(p, uap, retval)
- struct proc *p;
- struct args {
- int s;
- caddr_t name;
- int *anamelen;
- int compat_43;
- } *uap;
- int *retval;
- {
-
- uap->compat_43 = 1;
- return (accept1(p, uap, retval));
- }
- #else /* COMPAT_43 */
-
- #define accept1 accept
- #endif
-
- accept1(p, uap, retval)
- struct proc *p;
- register struct args {
- int s;
- caddr_t name;
- int *anamelen;
- #ifdef COMPAT_43
- int compat_43;
- #endif
- } *uap;
- int *retval;
- {
- struct file *fp;
- struct mbuf *nam;
- int namelen, error, s;
- register struct socket *so;
-
- if (uap->name && (error = copyin((caddr_t)uap->anamelen,
- (caddr_t)&namelen, sizeof (namelen))))
- return (error);
- if (error = getsock(p->p_fd, uap->s, &fp))
- return (error);
- s = splnet();
- so = (struct socket *)fp->f_data;
- if ((so->so_options & SO_ACCEPTCONN) == 0) {
- splx(s);
- return (EINVAL);
- }
- if ((so->so_state & SS_NBIO) && so->so_qlen == 0) {
- splx(s);
- return (EWOULDBLOCK);
- }
- while (so->so_qlen == 0 && so->so_error == 0) {
- if (so->so_state & SS_CANTRCVMORE) {
- so->so_error = ECONNABORTED;
- break;
- }
- if (error = tsleep((caddr_t)&so->so_timeo, PSOCK | PCATCH,
- netcon, 0)) {
- splx(s);
- return (error);
- }
- }
- if (so->so_error) {
- error = so->so_error;
- so->so_error = 0;
- splx(s);
- return (error);
- }
- if (error = falloc(p, &fp, retval)) {
- splx(s);
- return (error);
- }
- { struct socket *aso = so->so_q;
- if (soqremque(aso, 1) == 0)
- panic("accept");
- so = aso;
- }
- fp->f_type = DTYPE_SOCKET;
- fp->f_flag = FREAD|FWRITE;
- fp->f_ops = &socketops;
- fp->f_data = (caddr_t)so;
- nam = m_get(M_WAIT, MT_SONAME);
- (void) soaccept(so, nam);
- if (uap->name) {
- #ifdef COMPAT_43
- if (uap->compat_43)
- mtod(nam, struct osockaddr *)->sa_family =
- mtod(nam, struct sockaddr *)->sa_family;
- #endif
- if (namelen > nam->m_len)
- namelen = nam->m_len;
- /* SHOULD COPY OUT A CHAIN HERE */
- if ((error = copyout(mtod(nam, caddr_t), (caddr_t)uap->name,
- (u_int)namelen)) == 0)
- error = copyout((caddr_t)&namelen,
- (caddr_t)uap->anamelen, sizeof (*uap->anamelen));
- }
- m_freem(nam);
- splx(s);
- return (error);
- }
-
- /* ARGSUSED */
- connect(p, uap, retval)
- struct proc *p;
- register struct args {
- int s;
- caddr_t name;
- int namelen;
- } *uap;
- int *retval;
- {
- struct file *fp;
- register struct socket *so;
- struct mbuf *nam;
- int error, s;
-
- if (error = getsock(p->p_fd, uap->s, &fp))
- return (error);
- so = (struct socket *)fp->f_data;
- if ((so->so_state & SS_NBIO) && (so->so_state & SS_ISCONNECTING))
- return (EALREADY);
- if (error = sockargs(&nam, uap->name, uap->namelen, MT_SONAME))
- return (error);
- error = soconnect(so, nam);
- if (error)
- goto bad;
- if ((so->so_state & SS_NBIO) && (so->so_state & SS_ISCONNECTING)) {
- m_freem(nam);
- return (EINPROGRESS);
- }
- s = splnet();
- while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0)
- if (error = tsleep((caddr_t)&so->so_timeo, PSOCK | PCATCH,
- netcon, 0))
- break;
- if (error == 0) {
- error = so->so_error;
- so->so_error = 0;
- }
- splx(s);
- bad:
- so->so_state &= ~SS_ISCONNECTING;
- m_freem(nam);
- if (error == ERESTART)
- error = EINTR;
- return (error);
- }
-
- socketpair(p, uap, retval)
- struct proc *p;
- register struct args {
- int domain;
- int type;
- int protocol;
- int *rsv;
- } *uap;
- int retval[];
- {
- register struct filedesc *fdp = p->p_fd;
- struct file *fp1, *fp2;
- struct socket *so1, *so2;
- int fd, error, sv[2];
-
- if (error = socreate(uap->domain, &so1, uap->type, uap->protocol))
- return (error);
- if (error = socreate(uap->domain, &so2, uap->type, uap->protocol))
- goto free1;
- if (error = falloc(p, &fp1, &fd))
- goto free2;
- sv[0] = fd;
- fp1->f_flag = FREAD|FWRITE;
- fp1->f_type = DTYPE_SOCKET;
- fp1->f_ops = &socketops;
- fp1->f_data = (caddr_t)so1;
- if (error = falloc(p, &fp2, &fd))
- goto free3;
- fp2->f_flag = FREAD|FWRITE;
- fp2->f_type = DTYPE_SOCKET;
- fp2->f_ops = &socketops;
- fp2->f_data = (caddr_t)so2;
- sv[1] = fd;
- if (error = soconnect2(so1, so2))
- goto free4;
- if (uap->type == SOCK_DGRAM) {
- /*
- * Datagram socket connection is asymmetric.
- */
- if (error = soconnect2(so2, so1))
- goto free4;
- }
- error = copyout((caddr_t)sv, (caddr_t)uap->rsv, 2 * sizeof (int));
- retval[0] = sv[0]; /* XXX ??? */
- retval[1] = sv[1]; /* XXX ??? */
- return (error);
- free4:
- ffree(fp2);
- fdp->fd_ofiles[sv[1]] = 0;
- free3:
- ffree(fp1);
- fdp->fd_ofiles[sv[0]] = 0;
- free2:
- (void)soclose(so2);
- free1:
- (void)soclose(so1);
- return (error);
- }
-
- sendto(p, uap, retval)
- struct proc *p;
- register struct args {
- int s;
- caddr_t buf;
- int len;
- int flags;
- caddr_t to;
- int tolen;
- } *uap;
- int *retval;
- {
- struct msghdr msg;
- struct iovec aiov;
- int error;
-
- msg.msg_name = uap->to;
- msg.msg_namelen = uap->tolen;
- msg.msg_iov = &aiov;
- msg.msg_iovlen = 1;
- msg.msg_control = 0;
- #ifdef COMPAT_43
- msg.msg_flags = 0;
- #endif
- aiov.iov_base = uap->buf;
- aiov.iov_len = uap->len;
- return (sendit(p, uap->s, &msg, uap->flags, retval));
- }
-
- #ifdef COMPAT_43
- osend(p, uap, retval)
- struct proc *p;
- register struct args {
- int s;
- caddr_t buf;
- int len;
- int flags;
- } *uap;
- int *retval;
- {
- struct msghdr msg;
- struct iovec aiov;
-
- msg.msg_name = 0;
- msg.msg_namelen = 0;
- msg.msg_iov = &aiov;
- msg.msg_iovlen = 1;
- aiov.iov_base = uap->buf;
- aiov.iov_len = uap->len;
- msg.msg_control = 0;
- msg.msg_flags = 0;
- return (sendit(p, uap->s, &msg, uap->flags, retval));
- }
-
- #define MSG_COMPAT 0x8000
- osendmsg(p, uap, retval)
- struct proc *p;
- register struct args {
- int s;
- caddr_t msg;
- int flags;
- } *uap;
- int *retval;
- {
- struct msghdr msg;
- struct iovec aiov[UIO_SMALLIOV], *iov;
- int error;
-
- if (error = copyin(uap->msg, (caddr_t)&msg, sizeof (struct omsghdr)))
- return (error);
- if ((u_int)msg.msg_iovlen >= UIO_SMALLIOV) {
- if ((u_int)msg.msg_iovlen >= UIO_MAXIOV)
- return (EMSGSIZE);
- MALLOC(iov, struct iovec *,
- sizeof(struct iovec) * (u_int)msg.msg_iovlen, M_IOV,
- M_WAITOK);
- } else
- iov = aiov;
- if (error = copyin((caddr_t)msg.msg_iov, (caddr_t)iov,
- (unsigned)(msg.msg_iovlen * sizeof (struct iovec))))
- goto done;
- msg.msg_flags = MSG_COMPAT;
- msg.msg_iov = iov;
- error = sendit(p, uap->s, &msg, uap->flags, retval);
- done:
- if (iov != aiov)
- FREE(iov, M_IOV);
- return (error);
- }
- #endif
-
- sendmsg(p, uap, retval)
- struct proc *p;
- register struct args {
- int s;
- caddr_t msg;
- int flags;
- } *uap;
- int *retval;
- {
- struct msghdr msg;
- struct iovec aiov[UIO_SMALLIOV], *iov;
- int error;
-
- if (error = copyin(uap->msg, (caddr_t)&msg, sizeof (msg)))
- return (error);
- if ((u_int)msg.msg_iovlen >= UIO_SMALLIOV) {
- if ((u_int)msg.msg_iovlen >= UIO_MAXIOV)
- return (EMSGSIZE);
- MALLOC(iov, struct iovec *,
- sizeof(struct iovec) * (u_int)msg.msg_iovlen, M_IOV,
- M_WAITOK);
- } else
- iov = aiov;
- if (msg.msg_iovlen &&
- (error = copyin((caddr_t)msg.msg_iov, (caddr_t)iov,
- (unsigned)(msg.msg_iovlen * sizeof (struct iovec)))))
- goto done;
- msg.msg_iov = iov;
- #ifdef COMPAT_43
- msg.msg_flags = 0;
- #endif
- error = sendit(p, uap->s, &msg, uap->flags, retval);
- done:
- if (iov != aiov)
- FREE(iov, M_IOV);
- return (error);
- }
-
- sendit(p, s, mp, flags, retsize)
- register struct proc *p;
- int s;
- register struct msghdr *mp;
- int flags, *retsize;
- {
- struct file *fp;
- struct uio auio;
- register struct iovec *iov;
- register int i;
- struct mbuf *to, *control;
- int len, error;
- #ifdef KTRACE
- struct iovec *ktriov = NULL;
- #endif
-
- if (error = getsock(p->p_fd, s, &fp))
- return (error);
- auio.uio_iov = mp->msg_iov;
- auio.uio_iovcnt = mp->msg_iovlen;
- auio.uio_segflg = UIO_USERSPACE;
- auio.uio_rw = UIO_WRITE;
- auio.uio_procp = p;
- auio.uio_offset = 0; /* XXX */
- auio.uio_resid = 0;
- iov = mp->msg_iov;
- for (i = 0; i < mp->msg_iovlen; i++, iov++) {
- if (iov->iov_len < 0)
- return (EINVAL);
- if ((auio.uio_resid += iov->iov_len) < 0)
- return (EINVAL);
- }
- if (mp->msg_name) {
- if (error = sockargs(&to, mp->msg_name, mp->msg_namelen,
- MT_SONAME))
- return (error);
- } else
- to = 0;
- if (mp->msg_control) {
- if (mp->msg_controllen < sizeof(struct cmsghdr)
- #ifdef COMPAT_43
- && mp->msg_flags != MSG_COMPAT
- #endif
- ) {
- error = EINVAL;
- goto bad;
- }
- if (error = sockargs(&control, mp->msg_control,
- mp->msg_controllen, MT_CONTROL))
- goto bad;
- #ifdef COMPAT_43
- if (mp->msg_flags == MSG_COMPAT) {
- register struct cmsghdr *cm;
-
- M_PREPEND(control, sizeof(*cm), M_WAIT);
- if (control == 0) {
- error = ENOBUFS;
- goto bad;
- } else {
- cm = mtod(control, struct cmsghdr *);
- cm->cmsg_len = control->m_len;
- cm->cmsg_level = SOL_SOCKET;
- cm->cmsg_type = SCM_RIGHTS;
- }
- }
- #endif
- } else
- control = 0;
- #ifdef KTRACE
- if (KTRPOINT(p, KTR_GENIO)) {
- int iovlen = auio.uio_iovcnt * sizeof (struct iovec);
-
- MALLOC(ktriov, struct iovec *, iovlen, M_TEMP, M_WAITOK);
- bcopy((caddr_t)auio.uio_iov, (caddr_t)ktriov, iovlen);
- }
- #endif
- len = auio.uio_resid;
- if (error = sosend((struct socket *)fp->f_data, to, &auio,
- (struct mbuf *)0, control, flags)) {
- if (auio.uio_resid != len && (error == ERESTART ||
- error == EINTR || error == EWOULDBLOCK))
- error = 0;
- if (error == EPIPE)
- psignal(p, SIGPIPE);
- }
- if (error == 0)
- *retsize = len - auio.uio_resid;
- #ifdef KTRACE
- if (ktriov != NULL) {
- if (error == 0)
- ktrgenio(p->p_tracep, s, UIO_WRITE,
- ktriov, *retsize, error);
- FREE(ktriov, M_TEMP);
- }
- #endif
- bad:
- if (to)
- m_freem(to);
- return (error);
- }
-
- #ifdef COMPAT_43
- orecvfrom(p, uap, retval)
- struct proc *p;
- struct args {
- int s;
- caddr_t buf;
- int len;
- int flags;
- caddr_t from;
- int *fromlenaddr;
- } *uap;
- int *retval;
- {
-
- uap->flags |= MSG_COMPAT;
- return (recvfrom(p, uap, retval));
- }
- #endif
-
- recvfrom(p, uap, retval)
- struct proc *p;
- register struct args {
- int s;
- caddr_t buf;
- int len;
- int flags;
- caddr_t from;
- int *fromlenaddr;
- } *uap;
- int *retval;
- {
- struct msghdr msg;
- struct iovec aiov;
- int error;
-
- if (uap->fromlenaddr) {
- if (error = copyin((caddr_t)uap->fromlenaddr,
- (caddr_t)&msg.msg_namelen, sizeof (msg.msg_namelen)))
- return (error);
- } else
- msg.msg_namelen = 0;
- msg.msg_name = uap->from;
- msg.msg_iov = &aiov;
- msg.msg_iovlen = 1;
- aiov.iov_base = uap->buf;
- aiov.iov_len = uap->len;
- msg.msg_control = 0;
- msg.msg_flags = uap->flags;
- return (recvit(p, uap->s, &msg, (caddr_t)uap->fromlenaddr, retval));
- }
-
- #ifdef COMPAT_43
- orecv(p, uap, retval)
- struct proc *p;
- register struct args {
- int s;
- caddr_t buf;
- int len;
- int flags;
- } *uap;
- int *retval;
- {
- struct msghdr msg;
- struct iovec aiov;
-
- msg.msg_name = 0;
- msg.msg_namelen = 0;
- msg.msg_iov = &aiov;
- msg.msg_iovlen = 1;
- aiov.iov_base = uap->buf;
- aiov.iov_len = uap->len;
- msg.msg_control = 0;
- msg.msg_flags = uap->flags;
- return (recvit(p, uap->s, &msg, (caddr_t)0, retval));
- }
-
- /*
- * Old recvmsg. This code takes advantage of the fact that the old msghdr
- * overlays the new one, missing only the flags, and with the (old) access
- * rights where the control fields are now.
- */
- orecvmsg(p, uap, retval)
- struct proc *p;
- register struct args {
- int s;
- struct omsghdr *msg;
- int flags;
- } *uap;
- int *retval;
- {
- struct msghdr msg;
- struct iovec aiov[UIO_SMALLIOV], *iov;
- int error;
-
- if (error = copyin((caddr_t)uap->msg, (caddr_t)&msg,
- sizeof (struct omsghdr)))
- return (error);
- if ((u_int)msg.msg_iovlen >= UIO_SMALLIOV) {
- if ((u_int)msg.msg_iovlen >= UIO_MAXIOV)
- return (EMSGSIZE);
- MALLOC(iov, struct iovec *,
- sizeof(struct iovec) * (u_int)msg.msg_iovlen, M_IOV,
- M_WAITOK);
- } else
- iov = aiov;
- msg.msg_flags = uap->flags | MSG_COMPAT;
- if (error = copyin((caddr_t)msg.msg_iov, (caddr_t)iov,
- (unsigned)(msg.msg_iovlen * sizeof (struct iovec))))
- goto done;
- msg.msg_iov = iov;
- error = recvit(p, uap->s, &msg, (caddr_t)&uap->msg->msg_namelen, retval);
-
- if (msg.msg_controllen && error == 0)
- error = copyout((caddr_t)&msg.msg_controllen,
- (caddr_t)&uap->msg->msg_accrightslen, sizeof (int));
- done:
- if (iov != aiov)
- FREE(iov, M_IOV);
- return (error);
- }
- #endif
-
- recvmsg(p, uap, retval)
- struct proc *p;
- register struct args {
- int s;
- struct msghdr *msg;
- int flags;
- } *uap;
- int *retval;
- {
- struct msghdr msg;
- struct iovec aiov[UIO_SMALLIOV], *uiov, *iov;
- register int error;
-
- if (error = copyin((caddr_t)uap->msg, (caddr_t)&msg, sizeof (msg)))
- return (error);
- if ((u_int)msg.msg_iovlen >= UIO_SMALLIOV) {
- if ((u_int)msg.msg_iovlen >= UIO_MAXIOV)
- return (EMSGSIZE);
- MALLOC(iov, struct iovec *,
- sizeof(struct iovec) * (u_int)msg.msg_iovlen, M_IOV,
- M_WAITOK);
- } else
- iov = aiov;
- #ifdef COMPAT_43
- msg.msg_flags = uap->flags &~ MSG_COMPAT;
- #else
- msg.msg_flags = uap->flags;
- #endif
- uiov = msg.msg_iov;
- msg.msg_iov = iov;
- if (error = copyin((caddr_t)uiov, (caddr_t)iov,
- (unsigned)(msg.msg_iovlen * sizeof (struct iovec))))
- goto done;
- if ((error = recvit(p, uap->s, &msg, (caddr_t)0, retval)) == 0) {
- msg.msg_iov = uiov;
- error = copyout((caddr_t)&msg, (caddr_t)uap->msg, sizeof(msg));
- }
- done:
- if (iov != aiov)
- FREE(iov, M_IOV);
- return (error);
- }
-
- recvit(p, s, mp, namelenp, retsize)
- register struct proc *p;
- int s;
- register struct msghdr *mp;
- caddr_t namelenp;
- int *retsize;
- {
- struct file *fp;
- struct uio auio;
- register struct iovec *iov;
- register int i;
- int len, error;
- struct mbuf *from = 0, *control = 0;
- #ifdef KTRACE
- struct iovec *ktriov = NULL;
- #endif
-
- if (error = getsock(p->p_fd, s, &fp))
- return (error);
- auio.uio_iov = mp->msg_iov;
- auio.uio_iovcnt = mp->msg_iovlen;
- auio.uio_segflg = UIO_USERSPACE;
- auio.uio_rw = UIO_READ;
- auio.uio_procp = p;
- auio.uio_offset = 0; /* XXX */
- auio.uio_resid = 0;
- iov = mp->msg_iov;
- for (i = 0; i < mp->msg_iovlen; i++, iov++) {
- if (iov->iov_len < 0)
- return (EINVAL);
- if ((auio.uio_resid += iov->iov_len) < 0)
- return (EINVAL);
- }
- #ifdef KTRACE
- if (KTRPOINT(p, KTR_GENIO)) {
- int iovlen = auio.uio_iovcnt * sizeof (struct iovec);
-
- MALLOC(ktriov, struct iovec *, iovlen, M_TEMP, M_WAITOK);
- bcopy((caddr_t)auio.uio_iov, (caddr_t)ktriov, iovlen);
- }
- #endif
- len = auio.uio_resid;
- if (error = soreceive((struct socket *)fp->f_data, &from, &auio,
- (struct mbuf **)0, &control, &mp->msg_flags)) {
- if (auio.uio_resid != len && (error == ERESTART ||
- error == EINTR || error == EWOULDBLOCK))
- error = 0;
- }
- #ifdef KTRACE
- if (ktriov != NULL) {
- if (error == 0)
- ktrgenio(p->p_tracep, s, UIO_READ,
- ktriov, len - auio.uio_resid, error);
- FREE(ktriov, M_TEMP);
- }
- #endif
- if (error)
- goto out;
- *retsize = len - auio.uio_resid;
- if (mp->msg_name) {
- len = mp->msg_namelen;
- if (len <= 0 || from == 0)
- len = 0;
- else {
- #ifdef COMPAT_43
- if (mp->msg_flags & MSG_COMPAT)
- mtod(from, struct osockaddr *)->sa_family =
- mtod(from, struct sockaddr *)->sa_family;
- #endif
- if (len > from->m_len)
- len = from->m_len;
- /* else if len < from->m_len ??? */
- if (error = copyout(mtod(from, caddr_t),
- (caddr_t)mp->msg_name, (unsigned)len))
- goto out;
- }
- mp->msg_namelen = len;
- if (namelenp &&
- (error = copyout((caddr_t)&len, namelenp, sizeof (int)))) {
- #ifdef COMPAT_43
- if (mp->msg_flags & MSG_COMPAT)
- error = 0; /* old recvfrom didn't check */
- else
- #endif
- goto out;
- }
- }
- if (mp->msg_control) {
- #ifdef COMPAT_43
- /*
- * We assume that old recvmsg calls won't receive access
- * rights and other control info, esp. as control info
- * is always optional and those options didn't exist in 4.3.
- * If we receive rights, trim the cmsghdr; anything else
- * is tossed.
- */
- if (control && mp->msg_flags & MSG_COMPAT) {
- if (mtod(control, struct cmsghdr *)->cmsg_level !=
- SOL_SOCKET ||
- mtod(control, struct cmsghdr *)->cmsg_type !=
- SCM_RIGHTS) {
- mp->msg_controllen = 0;
- goto out;
- }
- control->m_len -= sizeof (struct cmsghdr);
- control->m_data += sizeof (struct cmsghdr);
- }
- #endif
- len = mp->msg_controllen;
- if (len <= 0 || control == 0)
- len = 0;
- else {
- if (len >= control->m_len)
- len = control->m_len;
- else
- mp->msg_flags |= MSG_CTRUNC;
- error = copyout((caddr_t)mtod(control, caddr_t),
- (caddr_t)mp->msg_control, (unsigned)len);
- }
- mp->msg_controllen = len;
- }
- out:
- if (from)
- m_freem(from);
- if (control)
- m_freem(control);
- return (error);
- }
-
- /* ARGSUSED */
- shutdown(p, uap, retval)
- struct proc *p;
- register struct args {
- int s;
- int how;
- } *uap;
- int *retval;
- {
- struct file *fp;
- int error;
-
- if (error = getsock(p->p_fd, uap->s, &fp))
- return (error);
- return (soshutdown((struct socket *)fp->f_data, uap->how));
- }
-
- /* ARGSUSED */
- setsockopt(p, uap, retval)
- struct proc *p;
- register struct args {
- int s;
- int level;
- int name;
- caddr_t val;
- int valsize;
- } *uap;
- int *retval;
- {
- struct file *fp;
- struct mbuf *m = NULL;
- int error;
-
- if (error = getsock(p->p_fd, uap->s, &fp))
- return (error);
- if (uap->valsize > MLEN)
- return (EINVAL);
- if (uap->val) {
- m = m_get(M_WAIT, MT_SOOPTS);
- if (m == NULL)
- return (ENOBUFS);
- if (error = copyin(uap->val, mtod(m, caddr_t),
- (u_int)uap->valsize)) {
- (void) m_free(m);
- return (error);
- }
- m->m_len = uap->valsize;
- }
- return (sosetopt((struct socket *)fp->f_data, uap->level,
- uap->name, m));
- }
-
- /* ARGSUSED */
- getsockopt(p, uap, retval)
- struct proc *p;
- register struct args {
- int s;
- int level;
- int name;
- caddr_t val;
- int *avalsize;
- } *uap;
- int *retval;
- {
- struct file *fp;
- struct mbuf *m = NULL;
- int valsize, error;
-
- if (error = getsock(p->p_fd, uap->s, &fp))
- return (error);
- if (uap->val) {
- if (error = copyin((caddr_t)uap->avalsize, (caddr_t)&valsize,
- sizeof (valsize)))
- return (error);
- } else
- valsize = 0;
- if ((error = sogetopt((struct socket *)fp->f_data, uap->level,
- uap->name, &m)) == 0 && uap->val && valsize && m != NULL) {
- if (valsize > m->m_len)
- valsize = m->m_len;
- error = copyout(mtod(m, caddr_t), uap->val, (u_int)valsize);
- if (error == 0)
- error = copyout((caddr_t)&valsize,
- (caddr_t)uap->avalsize, sizeof (valsize));
- }
- if (m != NULL)
- (void) m_free(m);
- return (error);
- }
-
- /* ARGSUSED */
- pipe(p, uap, retval)
- struct proc *p;
- struct args *uap;
- int retval[];
- {
- register struct filedesc *fdp = p->p_fd;
- struct file *rf, *wf;
- struct socket *rso, *wso;
- int fd, error;
-
- if (error = socreate(AF_UNIX, &rso, SOCK_STREAM, 0))
- return (error);
- if (error = socreate(AF_UNIX, &wso, SOCK_STREAM, 0))
- goto free1;
- if (error = falloc(p, &rf, &fd))
- goto free2;
- retval[0] = fd;
- rf->f_flag = FREAD;
- rf->f_type = DTYPE_SOCKET;
- rf->f_ops = &socketops;
- rf->f_data = (caddr_t)rso;
- if (error = falloc(p, &wf, &fd))
- goto free3;
- wf->f_flag = FWRITE;
- wf->f_type = DTYPE_SOCKET;
- wf->f_ops = &socketops;
- wf->f_data = (caddr_t)wso;
- retval[1] = fd;
- if (error = unp_connect2(wso, rso))
- goto free4;
- return (0);
- free4:
- ffree(wf);
- fdp->fd_ofiles[retval[1]] = 0;
- free3:
- ffree(rf);
- fdp->fd_ofiles[retval[0]] = 0;
- free2:
- (void)soclose(wso);
- free1:
- (void)soclose(rso);
- return (error);
- }
-
- /*
- * Get socket name.
- */
- #ifdef COMPAT_43
- getsockname(p, uap, retval)
- struct proc *p;
- struct args {
- int fdes;
- caddr_t asa;
- int *alen;
- int compat_43;
- } *uap;
- int *retval;
- {
-
- uap->compat_43 = 0;
- return (getsockname1(p, uap, retval));
- }
-
- ogetsockname(p, uap, retval)
- struct proc *p;
- struct args {
- int fdes;
- caddr_t asa;
- int *alen;
- int compat_43;
- } *uap;
- int *retval;
- {
-
- uap->compat_43 = 1;
- return (getsockname1(p, uap, retval));
- }
- #else /* COMPAT_43 */
-
- #define getsockname1 getsockname
- #endif
-
- /* ARGSUSED */
- getsockname1(p, uap, retval)
- struct proc *p;
- register struct args {
- int fdes;
- caddr_t asa;
- int *alen;
- #ifdef COMPAT_43
- int compat_43;
- #endif
- } *uap;
- int *retval;
- {
- struct file *fp;
- register struct socket *so;
- struct mbuf *m;
- int len, error;
-
- if (error = getsock(p->p_fd, uap->fdes, &fp))
- return (error);
- if (error = copyin((caddr_t)uap->alen, (caddr_t)&len, sizeof (len)))
- return (error);
- so = (struct socket *)fp->f_data;
- m = m_getclr(M_WAIT, MT_SONAME);
- if (m == NULL)
- return (ENOBUFS);
- if (error = (*so->so_proto->pr_usrreq)(so, PRU_SOCKADDR, 0, m, 0))
- goto bad;
- if (len > m->m_len)
- len = m->m_len;
- #ifdef COMPAT_43
- if (uap->compat_43)
- mtod(m, struct osockaddr *)->sa_family =
- mtod(m, struct sockaddr *)->sa_family;
- #endif
- error = copyout(mtod(m, caddr_t), (caddr_t)uap->asa, (u_int)len);
- if (error == 0)
- error = copyout((caddr_t)&len, (caddr_t)uap->alen,
- sizeof (len));
- bad:
- m_freem(m);
- return (error);
- }
-
- /*
- * Get name of peer for connected socket.
- */
- #ifdef COMPAT_43
- getpeername(p, uap, retval)
- struct proc *p;
- struct args {
- int fdes;
- caddr_t asa;
- int *alen;
- int compat_43;
- } *uap;
- int *retval;
- {
-
- uap->compat_43 = 0;
- return (getpeername1(p, uap, retval));
- }
-
- ogetpeername(p, uap, retval)
- struct proc *p;
- struct args {
- int fdes;
- caddr_t asa;
- int *alen;
- int compat_43;
- } *uap;
- int *retval;
- {
-
- uap->compat_43 = 1;
- return (getpeername1(p, uap, retval));
- }
- #else /* COMPAT_43 */
-
- #define getpeername1 getpeername
- #endif
-
- /* ARGSUSED */
- getpeername1(p, uap, retval)
- struct proc *p;
- register struct args {
- int fdes;
- caddr_t asa;
- int *alen;
- #ifdef COMPAT_43
- int compat_43;
- #endif
- } *uap;
- int *retval;
- {
- struct file *fp;
- register struct socket *so;
- struct mbuf *m;
- int len, error;
-
- if (error = getsock(p->p_fd, uap->fdes, &fp))
- return (error);
- so = (struct socket *)fp->f_data;
- if ((so->so_state & (SS_ISCONNECTED|SS_ISCONFIRMING)) == 0)
- return (ENOTCONN);
- m = m_getclr(M_WAIT, MT_SONAME);
- if (m == NULL)
- return (ENOBUFS);
- if (error = copyin((caddr_t)uap->alen, (caddr_t)&len, sizeof (len)))
- return (error);
- if (error = (*so->so_proto->pr_usrreq)(so, PRU_PEERADDR, 0, m, 0))
- goto bad;
- if (len > m->m_len)
- len = m->m_len;
- #ifdef COMPAT_43
- if (uap->compat_43)
- mtod(m, struct osockaddr *)->sa_family =
- mtod(m, struct sockaddr *)->sa_family;
- #endif
- if (error = copyout(mtod(m, caddr_t), (caddr_t)uap->asa, (u_int)len))
- goto bad;
- error = copyout((caddr_t)&len, (caddr_t)uap->alen, sizeof (len));
- bad:
- m_freem(m);
- return (error);
- }
-
- sockargs(mp, buf, buflen, type)
- struct mbuf **mp;
- caddr_t buf;
- int buflen, type;
- {
- register struct mbuf *m;
- int error;
-
- if ((u_int)buflen > MLEN) {
- #ifdef COMPAT_43
- if (type == MT_SONAME && (u_int)buflen <= 112)
- buflen = MLEN; /* unix domain compat. hack */
- else
- #endif
- return (EINVAL);
- }
- m = m_get(M_WAIT, type);
- if (m == NULL)
- return (ENOBUFS);
- m->m_len = buflen;
- error = copyin(buf, mtod(m, caddr_t), (u_int)buflen);
- if (error)
- (void) m_free(m);
- else
- *mp = m;
- if (type == MT_SONAME) {
- register struct sockaddr *sa = mtod(m, struct sockaddr *);
-
- #if defined(COMPAT_43) && BYTE_ORDER != BIG_ENDIAN
- if (sa->sa_family == 0 && sa->sa_len < AF_MAX)
- sa->sa_family = sa->sa_len;
- #endif
- sa->sa_len = buflen;
- }
- return (error);
- }
-
- getsock(fdp, fdes, fpp)
- struct filedesc *fdp;
- int fdes;
- struct file **fpp;
- {
- register struct file *fp;
-
- if ((unsigned)fdes >= fdp->fd_nfiles ||
- (fp = fdp->fd_ofiles[fdes]) == NULL)
- return (EBADF);
- if (fp->f_type != DTYPE_SOCKET)
- return (ENOTSOCK);
- *fpp = fp;
- return (0);
- }
-